Publish the WSLC nuget package on github releases

[Blue (OneBlue)]

Summary of the Pull Request

This change updates the release pipeline to publish the wslc nuget package along the other artifacts

PR Checklist

• Closes: Link to issue #xxx
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated if needed and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated if needed
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

[Copilot]

Pull request overview

This PR updates the release/flight pipeline to include the WSLC NuGet package (Microsoft.WSL.Containers) as an asset when creating the GitHub release, alongside the existing MSIX bundle and MSI installers.

Changes:

• Add drop\nuget\Microsoft.WSL.Containers.<version>.nupkg to the asset list passed to tools/devops/create-release.py in the flight stage.